Sen. Joe Manchin said Thursday that he shares the concerns his colleagues have voiced about how a pharmaceutical company run by his daughter prices a life-saving medicine it produces.

The West Virginia Democrat’s daughter is Heather Bresch, the CEO of Mylan, the pharmaceutical company that makes the EpiPen, a product that delivers the life-saving drug epinephrine for people with allergies to bee stings or certain foods. Mylan has come under fire in recent days for raising the price of the EpiPen by 548 percent since it acquired the rights to the product in 2007. A twin EpiPen pack now costs a little more than $608.

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Bresch has come under specific criticism over her compensation package, which according to NBC News has grown 671 percent in the time that Mylan has owned the rights to the EpiPen, from nearly $2.5 million in 2007, to nearly $19 million in 2015

In response to the criticism, Mylan announced that it would expand eligibility for its patient-assistance program and offer a $300 savings card, lowering the out-of-pocket costs for some individual purchasers and in some cases, reducing the cost of the drug to nothing.

“I am aware of the questions my colleagues and many parents are asking and frankly I share their concerns about the skyrocketing prices of prescription drugs,” Manchin said in a statement. “Today I heard Mylan’s initial response, and I am sure Mylan will have a more comprehensive and formal response to those questions. I look forward to reviewing their response in detail and working with my colleagues and all interested parties to lower the price of prescription drugs and to continue to improve our health care system.”

Sen. Amy Klobuchar (D-Minn.), who has been outspoken in her criticism of Mylan, said the company’s move to help individual purchasers was “a …

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